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sunrpc: fix CVE-2022-23218 and fix CVE-2022-23219

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(cherry picked from commit 4a1b7f8af6d3ead795434d4ffa6cfccfa405f68a)
This commit is contained in:
liqingqing_1229 2022-01-19 11:41:51 +08:00 committed by openeuler-sync-bot
parent a6d2daadf5
commit 3434c0b0bd
5 changed files with 413 additions and 1 deletions
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110
CVE-2022-23218-Buffer-overflow-in-sunrpc-svcunix_cre.patch Normal file
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@ -0,0 +1,110 @@
From f545ad4928fa1f27a3075265182b38a4f939a5f7 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 17 Jan 2022 10:21:34 +0100
Subject: [PATCH] CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug
28768)
The sunrpc function svcunix_create suffers from a stack-based buffer
overflow with overlong pathname arguments.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
sunrpc/Makefile | 2 +-
sunrpc/svc_unix.c | 11 ++++-------
sunrpc/tst-bug28768.c | 42 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 47 insertions(+), 8 deletions(-)
create mode 100644 sunrpc/tst-bug28768.c
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index 183ef3d..a79a719 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -65,7 +65,7 @@ shared-only-routines = $(routines)
endif
tests = tst-xdrmem tst-xdrmem2 test-rpcent tst-udp-error tst-udp-timeout \
- tst-udp-nonblocking tst-bug22542
+ tst-udp-nonblocking tst-bug22542 tst-bug28768
xtests := tst-getmyaddr
diff --git a/sunrpc/svc_unix.c b/sunrpc/svc_unix.c
index f2280b4..67177a2 100644
--- a/sunrpc/svc_unix.c
+++ b/sunrpc/svc_unix.c
@@ -154,7 +154,10 @@ svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path)
SVCXPRT *xprt;
struct unix_rendezvous *r;
struct sockaddr_un addr;
- socklen_t len = sizeof (struct sockaddr_in);
+ socklen_t len = sizeof (addr);
+
+ if (__sockaddr_un_set (&addr, path) < 0)
+ return NULL;
if (sock == RPC_ANYSOCK)
{
@@ -165,12 +168,6 @@ svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path)
}
madesock = TRUE;
}
- memset (&addr, '\0', sizeof (addr));
- addr.sun_family = AF_UNIX;
- len = strlen (path) + 1;
- memcpy (addr.sun_path, path, len);
- len += sizeof (addr.sun_family);
-
__bind (sock, (struct sockaddr *) &addr, len);
if (__getsockname (sock, (struct sockaddr *) &addr, &len) != 0
diff --git a/sunrpc/tst-bug28768.c b/sunrpc/tst-bug28768.c
new file mode 100644
index 0000000..35a4b7b
--- /dev/null
+++ b/sunrpc/tst-bug28768.c
@@ -0,0 +1,42 @@
+/* Test to verify that long path is rejected by svcunix_create (bug 28768).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <rpc/svc.h>
+#include <shlib-compat.h>
+#include <string.h>
+#include <support/check.h>
+
+/* svcunix_create does not have a default version in linkobj/libc.so. */
+compat_symbol_reference (libc, svcunix_create, svcunix_create, GLIBC_2_1);
+
+static int
+do_test (void)
+{
+ char pathname[109];
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+
+ errno = 0;
+ TEST_VERIFY (svcunix_create (RPC_ANYSOCK, 4096, 4096, pathname) == NULL);
+ TEST_COMPARE (errno, EINVAL);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

38
CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch Normal file
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@ -0,0 +1,38 @@
From 226b46770c82899b555986583294b049c6ec9b40 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 17 Jan 2022 10:21:34 +0100
Subject: [PATCH] CVE-2022-23219: Buffer overflow in sunrpc clnt_create for
"unix" (bug 22542)
Processing an overlong pathname in the sunrpc clnt_create function
results in a stack-based buffer overflow.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
sunrpc/clnt_gen.c | 10 +++++++---
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/sunrpc/clnt_gen.c b/sunrpc/clnt_gen.c
index 13ced89..b44357c 100644
--- a/sunrpc/clnt_gen.c
+++ b/sunrpc/clnt_gen.c
@@ -57,9 +57,13 @@ clnt_create (const char *hostname, u_long prog, u_long vers,
if (strcmp (proto, "unix") == 0)
{
- memset ((char *)&sun, 0, sizeof (sun));
- sun.sun_family = AF_UNIX;
- strcpy (sun.sun_path, hostname);
+ if (__sockaddr_un_set (&sun, hostname) < 0)
+ {
+ struct rpc_createerr *ce = &get_rpc_createerr ();
+ ce->cf_stat = RPC_SYSTEMERROR;
+ ce->cf_error.re_errno = errno;
+ return NULL;
+ }
sock = RPC_ANYSOCK;
client = clntunix_create (&sun, prog, vers, &sock, 0, 0);
if (client == NULL)
--
1.8.3.1

9
glibc.spec
View File

@ -59,7 +59,7 @@
##############################################################################
Name: glibc
Version: 2.28
Release: 84
Release: 85
Summary: The GNU libc libraries
License: %{all_license}
URL: http://www.gnu.org/software/glibc/
@ -144,6 +144,10 @@ Patch60: backport-fix-pthread_create-and-dlopen-racing.patch
Patch61: revert-Add-miss-brackets.patch
Patch62: Rewrite-iconv-option-parsing-BZ-19519.patch
Patch63: intl-Handle-translation-output-codesets-with-suffixes-BZ-26383.patch
Patch64: socket-Add-the-__sockaddr_un_set-function.patch
Patch65: CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch
Patch66: sunrpc-Test-case-for-clnt_create-unix-buffer-overflo.patch
Patch67: CVE-2022-23218-Buffer-overflow-in-sunrpc-svcunix_cre.patch
Provides: ldconfig rtld(GNU_HASH) bundled(gnulib)
@ -1168,6 +1172,9 @@ fi
%doc hesiod/README.hesiod
%changelog
* Wed Jan 19 2021 Qingqing Li <liqingqing3@huawei.com> - 2.28-85
- sunrpc: fix CVE-2022-23218 and fix CVE-2022-23219
* Fri Dec 24 2021 Yang yanchao <yangyanchao6@huawei.com> - 2.28-84
- use setlocale instand of xetlocale in tst-iconv-opt

171
socket-Add-the-__sockaddr_un_set-function.patch Normal file
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@ -0,0 +1,171 @@
From e368b12f6c16b6888dda99ba641e999b9c9643c8 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 17 Jan 2022 10:21:34 +0100
Subject: [PATCH] socket: Add the __sockaddr_un_set function
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
include/sys/un.h | 12 +++++++++
socket/Makefile | 6 ++++-
socket/sockaddr_un_set.c | 41 +++++++++++++++++++++++++++++
socket/tst-sockaddr_un_set.c | 62 ++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 120 insertions(+), 1 deletion(-)
create mode 100644 socket/sockaddr_un_set.c
create mode 100644 socket/tst-sockaddr_un_set.c
diff --git a/include/sys/un.h b/include/sys/un.h
index bdbee99..152afd9 100644
--- a/include/sys/un.h
+++ b/include/sys/un.h
@@ -1 +1,13 @@
#include <socket/sys/un.h>
+
+#ifndef _ISOMAC
+
+/* Set ADDR->sun_family to AF_UNIX and ADDR->sun_path to PATHNAME.
+ Return 0 on success or -1 on failure (due to overlong PATHNAME).
+ The caller should always use sizeof (struct sockaddr_un) as the
+ socket address length, disregaring the length of PATHNAME.
+ Only concrete (non-abstract) pathnames are supported. */
+int __sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
+ attribute_hidden;
+
+#endif /* _ISOMAC */
diff --git a/socket/Makefile b/socket/Makefile
index 39333e1..156eec6 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -29,10 +29,14 @@ headers := sys/socket.h sys/un.h bits/sockaddr.h bits/socket.h \
routines := accept bind connect getpeername getsockname getsockopt \
listen recv recvfrom recvmsg send sendmsg sendto \
setsockopt shutdown socket socketpair isfdtype opensock \
- sockatmark accept4 recvmmsg sendmmsg
+ sockatmark accept4 recvmmsg sendmmsg sockaddr_un_set
tests := tst-accept4
+tests-internal := \
+ tst-sockaddr_un_set \
+ # tests-internal
+
aux := sa_len
include ../Rules
diff --git a/socket/sockaddr_un_set.c b/socket/sockaddr_un_set.c
new file mode 100644
index 0000000..0bd40dc
--- /dev/null
+++ b/socket/sockaddr_un_set.c
@@ -0,0 +1,41 @@
+/* Set the sun_path member of struct sockaddr_un.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+int
+__sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
+{
+ size_t name_length = strlen (pathname);
+
+ /* The kernel supports names of exactly sizeof (addr->sun_path)
+ bytes, without a null terminator, but userspace does not; see the
+ SUN_LEN macro. */
+ if (name_length >= sizeof (addr->sun_path))
+ {
+ __set_errno (EINVAL); /* Error code used by the kernel. */
+ return -1;
+ }
+
+ addr->sun_family = AF_UNIX;
+ memcpy (addr->sun_path, pathname, name_length + 1);
+ return 0;
+}
diff --git a/socket/tst-sockaddr_un_set.c b/socket/tst-sockaddr_un_set.c
new file mode 100644
index 0000000..29c2a81
--- /dev/null
+++ b/socket/tst-sockaddr_un_set.c
@@ -0,0 +1,62 @@
+/* Test the __sockaddr_un_set function.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* Re-compile the function because the version in libc is not
+ exported. */
+#include "sockaddr_un_set.c"
+
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ struct sockaddr_un sun;
+
+ memset (&sun, 0xcc, sizeof (sun));
+ __sockaddr_un_set (&sun, "");
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
+ TEST_COMPARE (__sockaddr_un_set (&sun, ""), 0);
+
+ memset (&sun, 0xcc, sizeof (sun));
+ TEST_COMPARE (__sockaddr_un_set (&sun, "/example"), 0);
+ TEST_COMPARE_STRING (sun.sun_path, "/example");
+
+ {
+ char pathname[108]; /* Length of sun_path (ABI constant). */
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+ memset (&sun, 0xcc, sizeof (sun));
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), 0);
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
+ TEST_COMPARE_STRING (sun.sun_path, pathname);
+ }
+
+ {
+ char pathname[109];
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+ memset (&sun, 0xcc, sizeof (sun));
+ errno = 0;
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), -1);
+ TEST_COMPARE (errno, EINVAL);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1

86
sunrpc-Test-case-for-clnt_create-unix-buffer-overflo.patch Normal file
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@ -0,0 +1,86 @@
From ef972a4c50014a16132b5c75571cfb6b30bef136 Mon Sep 17 00:00:00 2001
From: Martin Sebor <msebor@redhat.com>
Date: Mon, 17 Jan 2022 10:21:34 +0100
Subject: [PATCH] sunrpc: Test case for clnt_create "unix" buffer overflow (bug
22542)
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
---
sunrpc/Makefile | 5 ++++-
sunrpc/tst-bug22542.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+), 1 deletion(-)
create mode 100644 sunrpc/tst-bug22542.c
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index 9a31fe4..183ef3d 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -95,7 +95,8 @@ others += rpcgen
endif
tests = tst-xdrmem tst-xdrmem2 test-rpcent tst-udp-error tst-udp-timeout \
- tst-udp-nonblocking
+ tst-udp-nonblocking tst-bug22542
+
xtests := tst-getmyaddr
ifeq ($(have-thread-library),yes)
@@ -246,3 +247,5 @@ $(objpfx)tst-udp-timeout: $(common-objpfx)linkobj/libc.so
$(objpfx)tst-udp-nonblocking: $(common-objpfx)linkobj/libc.so
$(objpfx)tst-udp-garbage: \
$(common-objpfx)linkobj/libc.so $(shared-thread-library)
+
+$(objpfx)tst-bug22542: $(common-objpfx)linkobj/libc.so
diff --git a/sunrpc/tst-bug22542.c b/sunrpc/tst-bug22542.c
new file mode 100644
index 0000000..d6cd797
--- /dev/null
+++ b/sunrpc/tst-bug22542.c
@@ -0,0 +1,44 @@
+/* Test to verify that overlong hostname is rejected by clnt_create
+ and doesn't cause a buffer overflow (bug 22542).
+
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <rpc/clnt.h>
+#include <string.h>
+#include <support/check.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+static int
+do_test (void)
+{
+ /* Create an arbitrary hostname that's longer than fits in sun_path. */
+ char name [sizeof ((struct sockaddr_un*)0)->sun_path * 2];
+ memset (name, 'x', sizeof name - 1);
+ name [sizeof name - 1] = '\0';
+
+ errno = 0;
+ CLIENT *clnt = clnt_create (name, 0, 0, "unix");
+
+ TEST_VERIFY (clnt == NULL);
+ TEST_COMPARE (errno, EINVAL);
+ return 0;
+}
+
+#include <support/test-driver.c>
--
1.8.3.1